LevelIndexHeader (Flink : 2.0-preview1 API)

All Known Implementing Classes:

OnHeapLevelIndexHeader
```
public interface LevelIndexHeader
```
Head level index for skip list.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getLevel()`	Returns the top level of skip list.
`long`	`getNextNode(int level)`	Returns the next node in the given level.
`void`	`updateLevel(int level)`	Updates the top level of skip list to the given level.
`void`	`updateNextNode(int level, long newNodeId)`	Updates the next node in the given level to the specified node id.

- Method Detail
  - getLevel
```
int getLevel()
```
    Returns the top level of skip list.
    
    Returns:
    
    the top level of skip list.
  - updateLevel
```
void updateLevel(int level)
```
    Updates the top level of skip list to the given level.
    
    Parameters:
    
    level - the level which top level of skip list updates to.
  - getNextNode
```
long getNextNode(int level)
```
    Returns the next node in the given level.
    
    Parameters:
    
    level - the level whose next node is returned.
    
    Returns:
    
    id of the next node.
  - updateNextNode
```
void updateNextNode(int level,
                    long newNodeId)
```
    Updates the next node in the given level to the specified node id.
    
    Parameters:
    
    level - the level whose next node is updated.
    
    newNodeId - the id of the next node.